Improvement in mechanism for holding bolsters in spinning-machines



nona smo @anni dimite.

Lettels Patent No. 94,470, dated September 7, 1869.

IMPROVEMENT IN MECHANISM FOR HOLDIN'G- BOLSTERS IN SPINNING-MACHINES.

The Schedule referred to in these Letters Patent and making part of thesame,

To all whom it may concern Beit known that I, ELisHA S. BURLINGAME, ofUxbridge, in the county of W'orcester, and Gommonwealth ofMassachusetts, have invented a new and improved Device for H olding` theSpindle and Bolster in a Tlwisting or Spinning-Frame; and I do herebydeclare that the following is a full and exact description thereof',reference heilig had to the accompanying drawings, and tothe letters ofreference marked thereon, making a part of this specification, in which-Figure l represents a perspective view of the spindle, with the improvedholsteiand spring-collar as applied to the spinning-trame. A is thebolster, B the spring-collar, and C the step for the spindle.

Figure 2 is the spring-collar B, detached from the bolster.

i Figure 3 represents the bolsterin full and in seotions, showing theshoulder, which lrests on the upper part of the rail, and the groove forthe spring-collar for the under Side of the rail of the frame.

Figure -L represents the step for the spindle in full, and also section,detached from the rail.

This invention consists in a new and improved construction of devices,as hereinafter described, for holding the spindle and bolster' intwisting and spinningframes. The bolster is used for the purpose ofholding the spindle in its proper position, when inl the operation ofspinning and doing. In order to take the spindle out of the frame, thebolster must be slipped ont ofthe socket, and this is much easier doneby the use of the spring-collar than the set-screw. The usual wayofhclding the bolster' is by set-screws, which are liable to get loose,and make bad work with the spinning. It' the screw is settoo tight, itwill indent thea bolster,which is made of' soft metal, thus cramping thespindle. It' it is set too light, the bolster is drawn out of its placein pulling ofi` the bohbius. The springcollar is a simpleand sure meansof fastening, is easily adj usted, lessens the expense of aspinning-haine from fifty to seventy-live dollars, overcomes all theobjections found in .the use ol' set-screws, and can be applied to anyframe now in use.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and application.

The bolster A is made of brassor soft metal, such as is commonly usedfor spindle-holsters, turned and fitted into the socket of the rail ofthe spinning-frame, with a shoulder, as seen in lig. 3, to rest on theupper side of the rail in the socket, and it is also fittedV to receivethe spindle at its proper place in the rail.

A groove is cut round the bolster, as seen also in fig. 3, t'o receivethe spring-collar B, as seen in iig. 1.

The spring-collar B is formed as seen in iig. 2, and madeoispring-steel, rolled out round or square, formed as seen in iig.2,.:,n1d sprung round the bolster in the groove, as seen in iig. 1,holds the bolster and spindle securely and nicely.

What I claim, and desire to secure by Letters Pat ent, is-

lhe combination, with the mister-mil, of the grooved bolster A andspring-collar B, when both are oonstructed and applied suhstzw'f-ally asand foi-the purpose herein described.

ELISHA BURLINGME. Witnesses:

GEO. W..HOB1ss, H. S. Mouse.

